Results 181 to 190 of about 2,751 (216)
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Androstane Therapy of Aplastic Anaemia
Acta Haematologica, 1972Androstane therapy in 34 new cases of aplastic anaemia together with the follow-up in 33 cases previously reported is evaluated. Thenew cases were of the acquired variety and had a hypoplastic marrow.
L, Duarte +3 more
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Total synthesis of androstanes
Canadian Journal of Chemistry, 1979A total synthesis of androstane derivatives is described. The desired configuration at C8 and at C13 is achieved in a ring C forming SnCl4-catalyzed Diels–Alder reaction. The preparation of methyl Z-2-methyl-4-oxo-2-pentenoate and the cyclization of a keto ester to a steroid 15,17-dione are also reported.
Masatoshi Kakushima +4 more
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Acta Crystallographica Section C Crystal Structure Communications, 1998
The title compound, C 19 H 28 O 2 , has the 5β configuration and a bowing angle of 71.76 (5) ° at the A/B ring junction. The crystal structure is stabilized by weak intermolecular C-H…O and van der Waals interactions.
A. Anthony +3 more
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The title compound, C 19 H 28 O 2 , has the 5β configuration and a bowing angle of 71.76 (5) ° at the A/B ring junction. The crystal structure is stabilized by weak intermolecular C-H…O and van der Waals interactions.
A. Anthony +3 more
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Preparation of Androstanes Related to Aphidicolin
Collection of Czechoslovak Chemical Communications, 2007The preparation of 3α,4α,17β-trihydroxy-, 3α,4α,16α,17α- and 2α,3α,16α,17α-tetrahydroxy-5α-androstane derivatives (5, 11, 18) from testosterone as steroidal analogues of diterpenoid inhibitor of DNA polymerase α, aphidicolin, is described. The crystal structure of 5α-androstane-3α,4α,17β-triyl triacetate (6) is reported.
Hanson, James R. +4 more
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Comparative urinary androstanes in the great apes
General and Comparative Endocrinology, 2003Urinary androstanes from seven species of male great apes (human, bonobo, chimpanzee, lowland gorilla, mountain gorilla, Bornean orangutan, and Sumatran orangutan) were separated by HPLC and detected by RIA using two testosterone antibodies. All animals examined showed the presence of testosterone and six additional immunoreactive peaks.
L R, Hagey, N M, Czekala
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Drug Metabolism and Pharmacokinetics, 2023
The mouse cytochrome P450 1A2 (Cyp1a2) gene is one of the constitutive androstane receptor (CAR, NR1I3) activator-inducible genes, and the regions involved in induction were examined herein. A reporter gene assay indicated the involvement of the -0.2-kb region in the induction of transcriptional activation by the mouse CAR agonist ligand 1,4-bis-[2-(3 ...
Yuki, Kawasaki +2 more
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The mouse cytochrome P450 1A2 (Cyp1a2) gene is one of the constitutive androstane receptor (CAR, NR1I3) activator-inducible genes, and the regions involved in induction were examined herein. A reporter gene assay indicated the involvement of the -0.2-kb region in the induction of transcriptional activation by the mouse CAR agonist ligand 1,4-bis-[2-(3 ...
Yuki, Kawasaki +2 more
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Androstanes with Modified Carbon Skeletons
European Journal of Organic Chemistry, 2011AbstractFour sterane hydrocarbons were prepared for comparison with fossil organic biomarkers in geological samples from Oman. 17β‐Methylestrane was prepared in six steps (36 % overall yield) from estrone methyl ether. Key steps of this sequence were a Wittig olefination and Birch reduction of the A‐ring. 17β‐Methylandrostane was obtained in four steps
Sascha Norden +3 more
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Pharmacogenetics of the Constitutive Androstane Receptor
Pharmacogenomics, 2007The constitutive androstane receptor (CAR), a member of the NR1I group of nuclear hormone receptors, has been implicated in regulating the expression of genes that are critical in xenobiotic and endobiotic metabolism, uptake and elimination as well as genes involved in various other physiological processes. Hence, functional variation in CAR associated
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Biochimica et Biophysica Acta (BBA) - Lipids and Lipid Metabolism, 1979
Significant metabolism of 5 alpha-androstane-3 beta,17 beta-diol to 17 beta-hydroxy-5 alpha-androstan-3-one was recorded in several tissues and organs from rats and humans. This bioconversion was further investigated in rat testis homogenates. 5 alpha-Androstane-3 beta,17 beta-diol was readily metabolized to 17 beta-hydroxy-5 alpha-androstan-3-one with
Arne Sunde +2 more
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Significant metabolism of 5 alpha-androstane-3 beta,17 beta-diol to 17 beta-hydroxy-5 alpha-androstan-3-one was recorded in several tissues and organs from rats and humans. This bioconversion was further investigated in rat testis homogenates. 5 alpha-Androstane-3 beta,17 beta-diol was readily metabolized to 17 beta-hydroxy-5 alpha-androstan-3-one with
Arne Sunde +2 more
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Radioimmunoassays for androsterone, 5α-androstane-3α,17β-diol and 5α-androstane-3β,17β-diol
Steroids, 1977Abstract Androsterone (3α-hydroxy-5α-androstan-17-one), 5α-androstane-3α, 17β-diol and 5α-androstane-3β,17B-diol were conjugated at C-16 through sulfur to bovine and human serum albumin. Rabbits injected with these conjugates produced antibodies suitable for radioimmunoassays of these hormone metabolites.
J ZAMECNIK +3 more
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